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Significance and Use
3.1 Recycling of deteriorated asphalt pavements is being used with increasing frequency for its economy and benefit of conserving raw materials. The objective of recycling is to reuse the two ingredients of asphalt concrete-aggregate and asphalt binder and to restore the desired properties to the mixture. Recycling is carried out hot or cold, depending on the condition of the deteriorated pavement, construction procedure, availability of equipment, and cost. This practice is for classifying recycling agents to be used in hot recycling.
1.1 This practice covers a standardized method whereby petroleum product additives to be used in hot recycling of asphalt concrete can be identified. The products are classified by viscosity in mm2/s measured at 60 °C [140 °F]. This practice does not apply to emulsified materials.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D70 Test Method for Density of Semi-Solid Bituminous Materials (Pycnometer Method)
D92 Test Method for Flash and Fire Points by Cleveland Open Cup Tester
D140 Practice for Sampling Bituminous Materials
D946 Specification for Penetration-Graded Asphalt Cement for Use in Pavement Construction
D1298 Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method
D1754 Test Method for Effects of Heat and Air on Asphaltic Materials (Thin-Film Oven Test)
D2007 Test Method for Characteristic Groups in Rubber Extender and Processing Oils and Other Petroleum-Derived Oils by the Clay-Gel Absorption Chromatographic Method
D2170 Test Method for Kinematic Viscosity of Asphalts (Bitumens)
D2171 Test Method for Viscosity of Asphalts by Vacuum Capillary Viscometer
D2872 Test Method for Effect of Heat and Air on a Moving Film of Asphalt (Rolling Thin-Film Oven Test)
D3381 Specification for Viscosity-Graded Asphalt Cement for Use in Pavement Construction
ICS Number Code 93.080.10 (Road construction); 93.080.20 (Road construction materials)
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ASTM D4552 / D4552M-10(2016)e1, Standard Practice for Classifying Hot-Mix Recycling Agents, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top